Mr Lee

I have a Cappuccino oil cap...not a pretty sight i must say.
Its been suggested that water/coolant is mixing with the oil but i have very little coolant loss and i mean little....would this cause the problem?
Not sure how much water/coolant in the oil would be needed to have such an effect to cause the foamy oil cap.
Should i be looking elsewhere for causes?
Would you recommend a pressure test?
Any suggestions would be much appreciated.
This is my first Audi and i don't want it to be my last.
Cheers.

uberwgn

Mr. Lee, does it get cold where you operate the car? How extensive is the contamination?

Mr Lee

uberwgn,
It's been very cold the last few weeks around minus 12 celsius (10.4 Fahrenheit) I'm in the UK so its never that warm until the Summer.
As for contamination..you mean oil right?...Just the milky foam substance on the oil filler cap and slight deposits on the dipstick.
I will try to answer the best i can...i'm not that well mechanically sound.
Cheers.

MikeSS

It's normal. You can search the various A3 forums and you'll find many questions like yours.

uberwgn

Got it, thanks.

Are you certain the coolant is disappearing?

We used to get this condition on one of our cars when the weather was abnormally cold. The water/oil emulsion on the filler cap would disappear as soon as the weather warmed up.

Mr Lee

Theres not a vast amount of coolant loss...its very little...about a 5mm drop from a marker on the reservoir tank..over a period of 3 weeks.
Thats why I thought its not that causing the water/oil emulsion on the oil cap.
If its condensation can I cure the problem?.
Cheers

MikeSS

Here's a thread from one of the 2.0T forums on VWVortex with details:

http://forums.vwvortex.com/showthrea...p#post72528926